A data collection stick based on sub-1ghz transmission

Abstract

The utility model discloses a data acquisition stick based on Sub 1GHz transmission, including inverter, the output of inverter is electrically connected with power and interface module, power and interface module includes DC DC power conversion circuit, reset / reload circuit and RS485 communication interface, the output of power and interface module is electrically connected with singlechip, the output of singlechip is electrically connected with pilot lamp, SPI FLASH storage module and Sub 1GHz communication module. The utility model discloses a Sub 1GHz communication module is adopted, and the working frequency range is 300MHz 920MHz, compared with traditional WiFi or 4G / 5G communication mode, has stronger diffraction ability and penetrability, can effectively overcome the signal shielding of indoor wall body etc. Obstacles, realized the reliable transmission of long distance with gateway, avoided the communication interruption problem caused by signal coverage shortage, improved the stability of data transmission significantly, simultaneously, Sub 1GHz communication module does not need to rely on the operator network, avoided the traffic expense of continuous production.

Description

Technical Field

[0001] This utility model relates to the field of Internet of Things (IoT) technology, specifically a data acquisition stick based on Sub-1GHz transmission. Background Technology

[0002] As a device for collecting and transmitting inverter operating parameters, data acquisition sticks typically establish a communication connection with the inverter via an RS485 interface. After reading the inverter's operating data, they forward the data to the home data gateway via a Wi-Fi or 4G / 5G wireless communication module. The gateway then processes and stores the data. However, Wi-Fi communication has limited coverage. When the distance between the acquisition stick and the home gateway exceeds the Wi-Fi signal coverage range, communication interruptions can easily occur, leading to insufficient data transmission reliability. Secondly, 4G / 5G communication incurs continuous data charges, increasing user costs. Furthermore, obstacles such as walls in indoor environments can easily block the signal, further limiting communication distance and stability. In addition, the hardware costs of Wi-Fi and 4G / 5G communication modules are relatively high, increasing the overall cost of the acquisition stick and hindering the large-scale promotion and application of the technology. Utility Model Content

[0003] The purpose of this invention is to provide a data acquisition stick based on Sub-1GHz transmission. By using Sub-1GHz technology, it achieves long-distance transmission with the gateway and effectively reduces the cost of using the product.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a data acquisition stick based on Sub-1GHz transmission, comprising an inverter, wherein the output terminal of the inverter is electrically connected to a power supply and interface module, the power supply and interface module comprising a DC-DC power conversion circuit, a Reset / Reload circuit and an RS485 communication interface, wherein the output terminal of the power supply and interface module is electrically connected to a microcontroller, and the output terminal of the microcontroller is electrically connected to an indicator light, an SPI FLASH storage module and a Sub-1GHz communication module.

[0005] As a preferred embodiment, the input terminal of the microcontroller is electrically connected to a download port (DW) and a hardware watchdog.

[0006] As a preferred embodiment, the number of indicator lights is three.

[0007] As a preferred embodiment, the input terminals of the DC-DC power conversion circuit, the Reset / Reload circuit, and the RS485 communication interface are all electrically connected to the output terminal of the inverter, and the output terminals of the DC-DC power conversion circuit, the Reset / Reload circuit, and the RS485 communication interface are all electrically connected to the input terminal of the microcontroller.

[0008] As a preferred embodiment, the operating frequency range of the Sub-1GHz communication module is 300MHz-920MHz.

[0009] As a preferred embodiment, the storage capacity of the SPI FLASH storage module is 8 MByte.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention employs a Sub-1GHz communication module with a working frequency range of 300MHz-920MHz. Compared to traditional WiFi or 4G / 5G communication methods, it has stronger diffraction and penetration capabilities, effectively overcoming signal obstruction by indoor walls and other obstacles. This enables reliable long-distance transmission with the gateway, avoiding communication interruptions caused by insufficient signal coverage and significantly improving data transmission stability. Furthermore, the Sub-1GHz communication module does not rely on the operator's network, avoiding continuous data charges and effectively reducing user costs. Moreover, the lower hardware cost of the Sub-1GHz communication module facilitates large-scale product promotion. Attached Figure Description

[0011] Figure 1 This is a system framework diagram of the present invention; Figure 2 This is a circuit diagram of the RS485 communication interface of this utility model; Figure 3 This is a circuit diagram of the microcontroller of this utility model; Figure 4 This is a schematic diagram of the DC-DC power conversion circuit of this utility model; Figure 5 This is a circuit diagram of the SPI FLASH storage module of this utility model; Figure 6 This is a circuit diagram of the indicator light of this utility model; Figure 7 This is a circuit diagram of the Sub-1GHz communication module of this utility model. Detailed Implementation

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0013] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0014] Example 1: Please see Figure 1 As shown, this utility model provides a data acquisition stick based on Sub-1GHz transmission, including an inverter. The output end of the inverter is electrically connected to a power supply and interface module. The power supply and interface module includes a DC-DC power conversion circuit, a Reset / Reload circuit, and an RS485 communication interface. The output end of the power supply and interface module is electrically connected to a microcontroller. The output end of the microcontroller is electrically connected to an indicator light, an SPI FLASH storage module, and a Sub-1GHz communication module.

[0015] In this technical solution, a Sub-1GHz communication module is adopted, with an operating frequency range of 300MHz-920MHz. Compared with traditional WiFi or 4G / 5G communication methods, it has stronger diffraction and penetration capabilities, effectively overcoming the signal obstruction caused by indoor walls and other obstacles. This enables reliable long-distance transmission with the gateway, avoiding communication interruptions caused by insufficient signal coverage and significantly improving the stability of data transmission. At the same time, the Sub-1GHz communication module does not rely on the operator's network, avoiding continuous data traffic fees and effectively reducing user costs. Furthermore, the lower hardware cost of the Sub-1GHz communication module facilitates large-scale product promotion.

[0016] Example 2: Based on Embodiment 1, this utility model is as follows: Figure 1 As shown, the microcontroller's input terminals are electrically connected to a download port (DW) and a hardware watchdog. It has three indicator lights. The input terminals of the DC-DC power conversion circuit, Reset / Reload circuit, and RS485 communication interface are all electrically connected to the inverter's output terminals. The output terminals of the DC-DC power conversion circuit, Reset / Reload circuit, and RS485 communication interface are all electrically connected to the microcontroller's input terminals. The Sub-1GHz communication module operates in the frequency range of 300MHz-920MHz, and the SPI FLASH memory module has a storage capacity of 8MByte.

[0017] In this technical solution, the DW (Download Port) allows for easy programming of the microcontroller, facilitating system debugging and program updates. The hardware watchdog and Reset / Reload circuits enhance the system's anti-interference capabilities, enabling automatic reset in case of program malfunctions and ensuring long-term reliability. Indicator lights allow users to monitor system status. The SPI FLASH storage module provides 8MByte of storage capacity, enabling temporary data caching to prevent data loss due to network fluctuations.

[0018] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A data acquisition rod based on Sub-1GHz transmission, comprising an inverter, characterized in that: The inverter's output terminal is electrically connected to a power supply and interface module, which includes a DC-DC power conversion circuit, a Reset / Reload circuit, and an RS485 communication interface. The output terminal of the power supply and interface module is electrically connected to a microcontroller, and the output terminal of the microcontroller is electrically connected to an indicator light, an SPI FLASH storage module, and a Sub-1GHz communication module.

2. The data acquisition stick based on Sub-1GHz transmission according to claim 1, characterized in that: The microcontroller's input terminals are electrically connected to a download port (DW) and a hardware watchdog.

3. The data acquisition stick based on Sub-1GHz transmission according to claim 1, characterized in that: The number of indicator lights is three.

4. The data acquisition stick based on Sub-1GHz transmission according to claim 1, characterized in that: The input terminals of the DC-DC power conversion circuit, Reset / Reload circuit, and RS485 communication interface are all electrically connected to the output terminal of the inverter, and the output terminals of the DC-DC power conversion circuit, Reset / Reload circuit, and RS485 communication interface are all electrically connected to the input terminal of the microcontroller.

5. A data acquisition stick based on Sub-1GHz transmission according to claim 1, characterized in that: The operating frequency range of the Sub-1GHz communication module is 300MHz-920MHz.

6. A data acquisition stick based on Sub-1GHz transmission according to claim 1, characterized in that: The SPIFLASH storage module has a storage capacity of 8MByte.

Images